Saw.



APPLICATION FILED SEPT. 7.1906.

6 a a a Q Q I j '2 Witnesses 6%.. WM 7 yl A9 YPATENTED FEB. 5, 1907,

' form of saw-tooth whereby the cutting edge ROBERT E. POINDEXTER, OEINDIANAPOLIS, INDIANA.

SAW.

Specification of Letters Patent.

Patented Feb. 5, 1907.

A licati fil d September 7,1906. Serial No. 333.651.

To all 1071,0711 it may concern:

Be it known that I, ROBERT E. POINDEX- TER, a citizen of the UnitedStates, residing at Indianapolis, in the county of Marion and State ofIndiana, have invented certain new and useful Improvements in Saws, ofwhich the following is a specification.

My said invention consists in an improved of the tooth is made thinnerthan the ordinary form of tooth, while its strength is not materiallyimpaired, thereby securing a tooth which is susceptible of making a veryrapid cut and at the same time be able to withstand the strain of heavywork, all as will be hereinafter more fully described and claimed.

Referring to the accompanying drawings, which are made a part hereof,Figure 1 is a section of a crosscut-saw, the cutting-teeth of which areof my improved form; and Figs. 2 and 3 are detail perspective views ofone of the cutting-teeth in difierent positions, on an exaggeratedscale, to illustrate the particular form of tooth constituting theinvention more clearly.

The saw A is or may be of any character, that shown being a section of acrosscut-saw having cutting-teeth a arranged in sections of three teethto each section, with arackingtooth a between the several sections ofcutting-teeth. This construction, however, it will be understood, isshown to illustrate the form of tooth in connection with some form ofsaw, but not necessarily to limit the invention to such a saw.

Each cutting-tooth a is provided with a beveled cutting-point of theusual or any apl proved general form, with a bevel on each side of thetapered point. Said bevel is first formed with fiat faces and thenconcaved by means of a small round file or other instrument, as shownmost clearly in Figs. 2 and 3, the concaved portion extending nearly theentire length of the beveled portion of the tooth, but not to theextreme cutting edge 1 on point 2, which edge and point are left of thesame angle as if the concavity was not formed in the face thereof. Othermeans or methods may be employed to secure the result, as will bereadily understood, the invention residing in the shape of the tooth.The strength of the point and edge of the tooth is thus left unimpaired,while the metal taken out by the concavity renders the cutting por tionof the tooth thinner and enables it to cut more rapidly than the oldform of saw.

Having thus fully described my said invention, what I claim as new, anddesire to secure by Letters Patent, is

1. A saw provided with a cutting-tooth having a beveled point, the faceof said bevel being concaved to the angle of the bevel but not to thepoint of the tooth, substantially as set forth.

2. A saw provided with cuttingteeth formed with their points beveled oneach side, the face of each bevel being formed concaved from points nearthe cutting edge and points of the teeth to near the opposite side ofthe bevel and extending lengthwise of said bevel, substantially as setforth.

3. A saw tooth with a beveled cuttingpoint, the bevel of which is formedconcaved, substantially as set forth.

In witness whereof I have hereunto set my hand and seal, atIndianapolis, Indiana, this 5th day of September, A. D. 1906.

ROBERT E. POINDEXTER. [LS1 WVitnesses:

E. J. HICKS, H. O. WADDY.

